Are some BullNose Pits visous.?

Question

Like after a few mouths will they turn on you.

Answer 1

ANY dog can be vicious if they are trained to be or abused.  Some breeds are easily made vicious due to their breeding but any dog can be trained to be either quite tame or quite vicious.  That being said, nearly any dog, no matter how well cared for or trained can "turn on you" if you accidentally or deliberately hurt or frighten them unexpectedly (by stepping on their tail or foot when they are asleep, for instance).

Bert